| 3657 | − | x | = | 3 20 | ( | 16650 | − | x | ) |
| 方程右边 = | 3 20 | × | 16650 | − | 3 20 | x |
| = | 4995 2 | − | 3 20 | x |
| 3657 | − | x | = | 4995 2 | − | 3 20 | x |
| - | x | + | 3 20 | x | = | 4995 2 | − | 3657 |
| - | 17 20 | x | = | 4995 2 | − | 3657 |
| - | 17 20 | x | = | - | 2319 2 |
2319 2 | = | 17 20 | x |
17 20 | x | = | 2319 2 |
| x | = | 2319 2 | ÷ | 17 20 |
| = | 2319 2 | × | 20 17 |
| = | 2319 | × | 10 17 |
| x | = | 23190 17 |
| x | = | 1364.117647 |